Cozaar and Tachyarrhythmia - a phase IV clinical study of FDA data

Summary:

Tachyarrhythmia is reported as a side effect among people who take Cozaar (losartan potassium), especially for people who are female, 60+ old, also take Aranesp, and have Bacteraemia.

The phase IV clinical study analyzes which people have Tachyarrhythmia when taking Cozaar. It is created by eHealthMe based on reports of 43,582 people who have side effects when taking Cozaar from the FDA, and is updated regularly.

What is Cozaar?

Cozaar has active ingredients of losartan potassium. It is often used in high blood pressure. eHealthMe is studying from 45,124 Cozaar users. Check the latest studies of Cozaar.

What is Tachyarrhythmia?

Tachyarrhythmia (disturbance of the heart rhythm in which the heart rate is abnormally increased) is found to be associated with 422 drugs and 901 conditions by eHealthMe. Check the latest studies of Tachyarrhythmia.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 30, 2026

43,582 people reported to have side effects when taking Cozaar.
Among them, 11 people (0.03%) have Tachyarrhythmia.

Among these 11 people:

What is the gender of people who have Tachyarrhythmia when taking Cozaar? *

female: 63.64 %
male: 36.36 %

What is the age of people who have Tachyarrhythmia when taking Cozaar? *

What are other drugs people take besides Cozaar? *

What are other side effects people have besides Tachyarrhythmia? *

Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 4 people, 36.36%
Oedema Peripheral (superficial swelling): 3 people, 27.27%
Fatigue (feeling of tiredness): 3 people, 27.27%
Fever: 3 people, 27.27%
Appetite - Decreased (decreased appetite occurs when you have a reduced desire to eat): 3 people, 27.27%
Hypotension (abnormally low blood pressure): 3 people, 27.27%
Depression: 3 people, 27.27%
Musculoskeletal Pain (pain affects the bones, muscles, ligaments, tendons, and nerves): 2 people, 18.18%
Cardiac Arrest: 2 people, 18.18%
Nausea And Vomiting: 2 people, 18.18%

What are the existing conditions these people have? *

Atrial Fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 2 people, 18.18%
Bacteraemia (presence of bacteria in the blood): 2 people, 18.18%
Type 2 Diabetes: 1 person, 9.09%
Heart Rate Irregular: 1 person, 9.09%
Asthma: 1 person, 9.09%
Bronchopulmonary Aspergillosis (lung disorder caused by aspergillus fungi): 1 person, 9.09%
Cardiac Failure: 1 person, 9.09%
Diabetes: 1 person, 9.09%
Gastric Ulcer (stomach ulcer): 1 person, 9.09%
Heart Palpitations (feelings or sensations that your heart is pounding or racing): 1 person, 9.09%

* Approximation only. Some reports may have incomplete information.

Do you take Cozaar and have Tachyarrhythmia?

- Check whether Tachyarrhythmia is associated with a drug or a condition
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously

Related studies:

Effectiveness of, long term effects of, and alternative drugs to Cozaar:

Cozaar (45,124 reports)

Tachyarrhythmia treatments and more:

Tachyarrhythmia (4,349 reports)

Browse all side effects of Cozaar:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all the drugs that are associated with Tachyarrhythmia:

Tachyarrhythmia (422 drugs)

Browse all the conditions that are associated with Tachyarrhythmia:

Tachyarrhythmia (901 conditions)

Related publications that referenced our studies

Lai SW, Lin HF, Lin CL, Liao KF, "No association between losartan use and acute pancreatitis in hypertensive patients", Eur J Hosp Pharm, 2017 Mar .
Lai SW, Lin HF, Lin CL, Liao KF, "No association between losartan use and acute pancreatitis in hypertensive patients", Eur J Hosp Pharm, 2017 Mar .

How the study uses the data?

The study uses data from the FDA. It is based on losartan potassium (the active ingredients of Cozaar) and Cozaar (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.